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Alik [6]
3 years ago
8

PERGUNTA 1

Mathematics
1 answer:
Reptile [31]3 years ago
5 0
C I guess




I don’t understand
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Your math teacher tells you that the next test is worth 100 points and contains 38 problems muitiple choices are worth 2 points
jeka94

Answer:

multiple choice have 30 questions

word problems have 8 questions

Step-by-step explanation:

x=multiple choice. y=word problems

2x+5y=100 ---eq1

x+y=38 ---eq2

y=38-x ---eq3

substitutet eq3 into eq1

2x+5(38-x)=100

2x+(-5x)+190=100

2x-5x=100-190

-3x=-90

x=-90/-3

x=30

substitute x to eq3

y=38-(30)

y=8

multiple choice have 30 questions

word problems have 8 questions

8 0
2 years ago
Triangle ABC and DEF are congruent. Find x.
miv72 [106K]

Δ ABC ≡ ΔDEF

⇒ ∠DEF = ∠ABC

.

<u>Solve x:</u>

x - 8 = 65

x = 73

.

Answer: x = 73°

4 0
3 years ago
Read 2 more answers
What does x represent in the equation is -2(bx-5)=16 if b is 3
uranmaximum [27]

Answer:

x = - 1

Step-by-step explanation:

Given

- 2(bx - 5) = 16 ← substitute b = 3

- 2(3x - 5) = 16 ( divide both sides by - 2 )

3x - 5 = - 8 ( add 5 to both sides )

3x = - 3 ( divide both sides by 3 )

x = - 1

8 0
3 years ago
Here are the ingredients needed to make 8 pancakes.
jeka57 [31]

Answer:

a) 1000mL Milk

b) 60g Butter

Step-by-step explanation:

a) 250mL*4=1000mL

b) 5g*12=60g

8 0
3 years ago
Read 2 more answers
The radius of a circle is 1 centimeter. What is the circle's circumference?
igomit [66]

Answer:

6.28 cm

Step-by-step explanation:

The formula for the circumference of a circle with radius r is C = 2*pi*r.

If we let pi = 3.14 and r = 1 cm, then the circumference of this circle is

C = 2(3.14)(1 cm) = 6.28 cm

6 0
3 years ago
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